ABAP Select data from SAP table C_TMVSSEXPVEHRES into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP C_TMVSSEXPVEHRES table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to C_TMVSSEXPVEHRES. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the C_TMVSSEXPVEHRES table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_C_TMVSSEXPVEHRES TYPE STANDARD TABLE OF C_TMVSSEXPVEHRES,
      WA_C_TMVSSEXPVEHRES TYPE C_TMVSSEXPVEHRES,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <C_TMVSSEXPVEHRES> TYPE C_TMVSSEXPVEHRES.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_C_TMVSSEXPVEHRES.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM C_TMVSSEXPVEHRES
  INTO TABLE IT_C_TMVSSEXPVEHRES.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM C_TMVSSEXPVEHRES
*  INTO TABLE @DATA(IT_C_TMVSSEXPVEHRES2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_C_TMVSSEXPVEHRES INDEX 1 INTO DATA(WA_C_TMVSSEXPVEHRES2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_C_TMVSSEXPVEHRES ASSIGNING <C_TMVSSEXPVEHRES>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<C_TMVSSEXPVEHRES>-MANDT = 1.
<C_TMVSSEXPVEHRES>-VEHSCHEDGEXPLANATIONLOGUUID = 1.
<C_TMVSSEXPVEHRES>-RESOURCEADDITIONALUUID = 1.
<C_TMVSSEXPVEHRES>-RESOURCEID = 1.
<C_TMVSSEXPVEHRES>-RESOURCEBREAKCALENDAR = 1.

ENDLOOP.

LOOP AT IT_C_TMVSSEXPVEHRES INTO WA_C_TMVSSEXPVEHRES.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_C_TMVSSEXPVEHRES-ISMULTIRESOURCE, sy-vline,
  WA_C_TMVSSEXPVEHRES-NUMBEROFRESOURCES, sy-vline,
  WA_C_TMVSSEXPVEHRES-RSCEREGISTRATIONNUMBER, sy-vline,
  WA_C_TMVSSEXPVEHRES-RESOURCECAPACITYWEIGHTQTY, sy-vline,
  WA_C_TMVSSEXPVEHRES-RESOURCECAPACITYWEIGHTQTYUNIT, sy-vline,
  WA_C_TMVSSEXPVEHRES-RESOURCECAPACITYVOLUMEQTY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_C_TMVSSEXPVEHRES you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_C_TMVSSEXPVEHRES TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_C_TMVSSEXPVEHRES INTO WA_C_TMVSSEXPVEHRES.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit CUNIT, internal->external for field RESOURCECAPACITYWEIGHTQTYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_C_TMVSSEXPVEHRES-RESOURCECAPACITYWEIGHTQTYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_C_TMVSSEXPVEHRES-RESOURCECAPACITYWEIGHTQTYUNIT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field RESOURCECAPACITYVOLUMEQTYUNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_C_TMVSSEXPVEHRES-RESOURCECAPACITYVOLUMEQTYUNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_C_TMVSSEXPVEHRES-RESOURCECAPACITYVOLUMEQTYUNIT.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_C_TMVSSEXPVEHRES_STR, 
MANDT TYPE STRING,
VEHSCHEDGEXPLANATIONLOGUUID TYPE STRING,
RESOURCEADDITIONALUUID TYPE STRING,
RESOURCEID TYPE STRING,
RESOURCEBREAKCALENDAR TYPE STRING,
ISMULTIRESOURCE TYPE STRING,
NUMBEROFRESOURCES TYPE STRING,
RSCEREGISTRATIONNUMBER TYPE STRING,
RESOURCECAPACITYWEIGHTQTY TYPE STRING,
RESOURCECAPACITYWEIGHTQTYUNIT TYPE STRING,
RESOURCECAPACITYVOLUMEQTY TYPE STRING,
RESOURCECAPACITYVOLUMEQTYUNIT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_C_TMVSSEXPVEHRES_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_C_TMVSSEXPVEHRES_STR-MANDT sy-vline 
WA_C_TMVSSEXPVEHRES_STR-VEHSCHEDGEXPLANATIONLOGUUID sy-vline 
WA_C_TMVSSEXPVEHRES_STR-RESOURCEADDITIONALUUID sy-vline 
WA_C_TMVSSEXPVEHRES_STR-RESOURCEID sy-vline 
WA_C_TMVSSEXPVEHRES_STR-RESOURCEBREAKCALENDAR sy-vline 
WA_C_TMVSSEXPVEHRES_STR-ISMULTIRESOURCE sy-vline 
WA_C_TMVSSEXPVEHRES_STR-NUMBEROFRESOURCES sy-vline 
WA_C_TMVSSEXPVEHRES_STR-RSCEREGISTRATIONNUMBER sy-vline 
WA_C_TMVSSEXPVEHRES_STR-RESOURCECAPACITYWEIGHTQTY sy-vline 
WA_C_TMVSSEXPVEHRES_STR-RESOURCECAPACITYWEIGHTQTYUNIT sy-vline 
WA_C_TMVSSEXPVEHRES_STR-RESOURCECAPACITYVOLUMEQTY sy-vline 
WA_C_TMVSSEXPVEHRES_STR-RESOURCECAPACITYVOLUMEQTYUNIT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.